[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-ID: <20241106145911.35503-5-frederic@kernel.org>
Date: Wed, 6 Nov 2024 15:59:07 +0100
From: Frederic Weisbecker <frederic@...nel.org>
To: LKML <linux-kernel@...r.kernel.org>
Cc: "Paul E. McKenney" <paulmck@...nel.org>,
Boqun Feng <boqun.feng@...il.com>,
Joel Fernandes <joel@...lfernandes.org>,
Josh Triplett <josh@...htriplett.org>,
Lai Jiangshan <jiangshanlai@...il.com>,
Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
Neeraj Upadhyay <neeraj.upadhyay@....com>,
Steven Rostedt <rostedt@...dmis.org>,
Uladzislau Rezki <urezki@...il.com>,
Zqiang <qiang.zhang1211@...il.com>,
rcu <rcu@...r.kernel.org>,
Frederic Weisbecker <frederic@...nel.org>
Subject: [PATCH 4/8] rcutorture: Test start-poll primitives with interrupts disabled
From: "Paul E. McKenney" <paulmck@...nel.org>
This commit tests the ->start_poll() and ->start_poll_full() functions
with interrupts disabled, but only for RCU variants setting the
->start_poll_irqsoff flag.
Signed-off-by: Paul E. McKenney <paulmck@...nel.org>
Signed-off-by: Frederic Weisbecker <frederic@...nel.org>
---
kernel/rcu/rcutorture.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/kernel/rcu/rcutorture.c b/kernel/rcu/rcutorture.c
index bb75dbf5c800..b4cb7623a8bf 100644
--- a/kernel/rcu/rcutorture.c
+++ b/kernel/rcu/rcutorture.c
@@ -393,6 +393,7 @@ struct rcu_torture_ops {
int slow_gps;
int no_pi_lock;
int debug_objects;
+ int start_poll_irqsoff;
const char *name;
};
@@ -581,6 +582,7 @@ static struct rcu_torture_ops rcu_ops = {
.can_boost = IS_ENABLED(CONFIG_RCU_BOOST),
.extendables = RCUTORTURE_MAX_EXTEND,
.debug_objects = 1,
+ .start_poll_irqsoff = 1,
.name = "rcu"
};
@@ -1695,14 +1697,22 @@ rcu_torture_fakewriter(void *arg)
cur_ops->cond_sync_exp_full(&gp_snap_full);
break;
case RTWS_POLL_GET:
+ if (cur_ops->start_poll_irqsoff)
+ local_irq_disable();
gp_snap = cur_ops->start_gp_poll();
+ if (cur_ops->start_poll_irqsoff)
+ local_irq_enable();
while (!cur_ops->poll_gp_state(gp_snap)) {
torture_hrtimeout_jiffies(torture_random(&rand) % 16,
&rand);
}
break;
case RTWS_POLL_GET_FULL:
+ if (cur_ops->start_poll_irqsoff)
+ local_irq_disable();
cur_ops->start_gp_poll_full(&gp_snap_full);
+ if (cur_ops->start_poll_irqsoff)
+ local_irq_enable();
while (!cur_ops->poll_gp_state_full(&gp_snap_full)) {
torture_hrtimeout_jiffies(torture_random(&rand) % 16,
&rand);
--
2.46.0
Powered by blists - more mailing lists